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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "tools/rbd/IndentStream.h"
namespace rbd {
int IndentBuffer::overflow (int c) {
if (traits_type::eq_int_type(traits_type::eof(), c)) {
return traits_type::not_eof(c);
}
int r;
switch (c) {
case '\n':
m_buffer += c;
flush_line();
r = m_streambuf->sputn(m_buffer.c_str(), m_buffer.size());
m_buffer.clear();
return r;
case '\t':
// convert tab to single space and fall-through
c = ' ';
default:
if (m_indent + m_buffer.size() >= m_line_length) {
size_t word_offset = m_buffer.find_last_of(m_delim);
bool space_delim = (m_delim == " ");
if (word_offset == std::string::npos && !space_delim) {
word_offset = m_buffer.find_last_of(" ");
}
if (word_offset != std::string::npos) {
flush_line();
m_streambuf->sputn(m_buffer.c_str(), word_offset);
m_buffer = std::string(m_buffer,
word_offset + (space_delim ? 1 : 0));
} else {
flush_line();
m_streambuf->sputn(m_buffer.c_str(), m_buffer.size());
m_buffer.clear();
}
m_streambuf->sputc('\n');
}
m_buffer += c;
return c;
}
}
void IndentBuffer::flush_line() {
if (m_initial_offset >= m_indent) {
m_initial_offset = 0;
m_streambuf->sputc('\n');
}
m_streambuf->sputn(m_indent_prefix.c_str(), m_indent - m_initial_offset);
m_initial_offset = 0;
}
} // namespace rbd
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